1 /*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_runtimeService.cpp.incl"
27
28 HS_DTRACE_PROBE_DECL(hs_private, safepoint__begin);
29 HS_DTRACE_PROBE_DECL(hs_private, safepoint__end);
30
31 TimeStamp RuntimeService::_app_timer;
32 TimeStamp RuntimeService::_safepoint_timer;
33 PerfCounter* RuntimeService::_sync_time_ticks = NULL;
34 PerfCounter* RuntimeService::_total_safepoints = NULL;
35 PerfCounter* RuntimeService::_safepoint_time_ticks = NULL;
36 PerfCounter* RuntimeService::_application_time_ticks = NULL;
37 PerfCounter* RuntimeService::_thread_interrupt_signaled_count = NULL;
38 PerfCounter* RuntimeService::_interrupted_before_count = NULL;
39 PerfCounter* RuntimeService::_interrupted_during_count = NULL;
40
41 void RuntimeService::init() {
42 // Make sure the VM version is initialized
43 Abstract_VM_Version::initialize();
44
45 if (UsePerfData) {
46 EXCEPTION_MARK;
47
48 _sync_time_ticks =
49 PerfDataManager::create_counter(SUN_RT, "safepointSyncTime",
50 PerfData::U_Ticks, CHECK);
51
52 _total_safepoints =
53 PerfDataManager::create_counter(SUN_RT, "safepoints",
54 PerfData::U_Events, CHECK);
55
56 _safepoint_time_ticks =
57 PerfDataManager::create_counter(SUN_RT, "safepointTime",
58 PerfData::U_Ticks, CHECK);
59
60 _application_time_ticks =
61 PerfDataManager::create_counter(SUN_RT, "applicationTime",
62 PerfData::U_Ticks, CHECK);
63
64
65 // create performance counters for jvm_version and its capabilities
66 PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None,
67 (jlong) Abstract_VM_Version::jvm_version(), CHECK);
68
69 // I/O interruption related counters
70
71 // thread signaling via os::interrupt()
72
73 _thread_interrupt_signaled_count =
74 PerfDataManager::create_counter(SUN_RT,
75 "threadInterruptSignaled", PerfData::U_Events, CHECK);
76
77 // OS_INTRPT via "check before" in _INTERRUPTIBLE
78
79 _interrupted_before_count =
80 PerfDataManager::create_counter(SUN_RT, "interruptedBeforeIO",
81 PerfData::U_Events, CHECK);
82
83 // OS_INTRPT via "check during" in _INTERRUPTIBLE
84
85 _interrupted_during_count =
86 PerfDataManager::create_counter(SUN_RT, "interruptedDuringIO",
87 PerfData::U_Events, CHECK);
88
89 // The capabilities counter is a binary representation of the VM capabilities in string.
90 // This string respresentation simplifies the implementation of the client side
91 // to parse the value.
92 char capabilities[65];
93 size_t len = sizeof(capabilities);
94 memset((void*) capabilities, '0', len);
95 capabilities[len-1] = '\0';
96 capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0';
97 #ifdef KERNEL
98 capabilities[1] = '1';
99 #endif // KERNEL
100 PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities",
101 capabilities, CHECK);
102 }
103 }
104
105 void RuntimeService::record_safepoint_begin() {
106 HS_DTRACE_PROBE(hs_private, safepoint__begin);
107
108 // Print the time interval in which the app was executing
109 if (PrintGCApplicationConcurrentTime) {
110 gclog_or_tty->print_cr("Application time: %3.7f seconds",
111 last_application_time_sec());
112 }
113
114 // update the time stamp to begin recording safepoint time
115 _safepoint_timer.update();
116 if (UsePerfData) {
117 _total_safepoints->inc();
118 if (_app_timer.is_updated()) {
119 _application_time_ticks->inc(_app_timer.ticks_since_update());
120 }
121 }
122 }
123
124 void RuntimeService::record_safepoint_synchronized() {
125 if (UsePerfData) {
126 _sync_time_ticks->inc(_safepoint_timer.ticks_since_update());
127 }
128 }
129
130 void RuntimeService::record_safepoint_end() {
131 HS_DTRACE_PROBE(hs_private, safepoint__end);
132
133 // Print the time interval for which the app was stopped
134 // during the current safepoint operation.
135 if (PrintGCApplicationStoppedTime) {
136 gclog_or_tty->print_cr("Total time for which application threads "
137 "were stopped: %3.7f seconds",
138 last_safepoint_time_sec());
139 }
140
141 // update the time stamp to begin recording app time
142 _app_timer.update();
143 if (UsePerfData) {
144 _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update());
145 }
146 }
147
148 void RuntimeService::record_application_start() {
149 // update the time stamp to begin recording app time
150 _app_timer.update();
151 }
152
153 // Don't need to record application end because we currently
154 // exit at a safepoint and record_safepoint_begin() handles updating
155 // the application time counter at VM exit.
156
157 jlong RuntimeService::safepoint_sync_time_ms() {
158 return UsePerfData ?
159 Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1;
160 }
161
162 jlong RuntimeService::safepoint_count() {
163 return UsePerfData ?
164 _total_safepoints->get_value() : -1;
165 }
166 jlong RuntimeService::safepoint_time_ms() {
167 return UsePerfData ?
168 Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1;
169 }
170
171 jlong RuntimeService::application_time_ms() {
172 return UsePerfData ?
173 Management::ticks_to_ms(_application_time_ticks->get_value()) : -1;
174 }
175
176 void RuntimeService::record_interrupted_before_count() {
177 if (UsePerfData) {
178 _interrupted_before_count->inc();
179 }
180 }
181
182 void RuntimeService::record_interrupted_during_count() {
183 if (UsePerfData) {
184 _interrupted_during_count->inc();
185 }
186 }
187
188 void RuntimeService::record_thread_interrupt_signaled_count() {
189 if (UsePerfData) {
190 _thread_interrupt_signaled_count->inc();
191 }
192 }